1.Research on evaluation of essential functional liver volume of solitary large hepatocellular carcinoma beforeγ-SABR
Wen SONG ; Shiqiang HAN ; Fengshan LI
China Medical Equipment 2015;(12):81-83
With the rapid development of medical technology, radiation therapy in the treatment of liver cancer occupies the important position. According to the biological characteristics of large liver cancer, the development of liver cancer radiotherapy at home and abroad and the technical features of stereotactic radiotherapy, it is concluded that the effect of radiation therapy of liver cancer can be comparable to those of surgery.γ-SABR is a kind of high accuracy of stereotactic radiotherapy. Before the treatment, usually do a rough evaluation according to the patient general condition, tumor size, and the liver function. The potential risk of radiation induced liver disease is very big. Therefore, the evaluation of essential functional liver volume of large liver cancer is particularly important before stereotactic radiotherapy. Draw lessons from the consensus of liver reserve function and the decision tree of liver function, the concept of essential functional liver volume and remaining functional liver volume is applied to theγ-SABR are being studied in clinical trials. This review is intend to outline the evaluation of essential functional liver volume of solitary large hepatocellular carcinoma beforeγ-SABR.
2.Role of AP-1 Activation in Regulation of Angiotensinogen Gene Expression Induced by AngⅡ
Aiying LI ; Jinkun WEN ; Mei HAN
Progress in Biochemistry and Biophysics 2006;0(08):-
Angiotensin Ⅱ(AngⅡ)can induce the expression of its precursor,angiotensinogen,in vascular smooth muscle cells(VSMC),which is related with increased activating protein-1(AP-1)binding to its cis-element located in the angiotensinogen gene promoter.In the present study,cycloheximide(CHX)was used as an inhibitor to interrupt c-Jun,the role of AP-1 in AngⅡ-induced its precursor gene activation was investigated by DNA-protein interaction and immunoblotting.The results showed that the level of c-Jun,the component of transcription factor AP-1,was significantly increased in the nucleus of VSMC after AngⅡ treatment.The majority of c-Jun was found in the nucleus but hardly detected in the cytoplasm by immunocytochemistry staining.Immunoprecipitation assays confirmed that AngⅡ could induce serine phosphorylation of c-Jun.EMSA results indicated that the level of phosphorylated of c-Jun had a positive correlation with AP-1 binding activity to cis-acting element of angiotensinogen gene and transcription activation of angiotensinogen.CHX inhibited AngⅡ-induced binding activity of AP-1 by reducing the phosphorylation of c-Jun,though it did not affect the expression of c-Jun.These findings suggest that the AP-1 phosphorylation induced by AngⅡ is one of the important mechanisms whereby AngⅡ regulates its precursor gene expression in feedback manner.It is found that CHX is an inhibitor to phosphorylation of c-Jun.
3.Research advances on structural modifications to resveratrol and their effect on biological activities
Li HAN ; Hong-peng LI ; Wen-ling LI
Acta Pharmaceutica Sinica 2020;55(11):2558-2569
Resveratrol possesses a wide range of biological activities, such as anti-cancer, anti-oxidation, induction of apoptosis, etc., but its poor drug properties, rapid metabolism, low target selectivity and bioavailability limit its application value. Studies have shown that modification of the structure of natural compounds can improve their pharmacological activities. To improve the bioavailability of resveratrol, many researchers have undertaken the synthesis and activity evaluation of resveratrol derivatives and analogues. They have modified the phenolic hydroxyl groups, double bonds and benzene ring of resveratrol so as to further understand the interactions among functional groups and its structure-activity relationship. In this paper, we review the chemical structures, synthetic methods and mechanisms of biological activity of resveratrol monomer derivatives as well as their related therapeutic applications, especially in the anticancer area over the last decade. This will provide some reference value for the further research and development of resveratrol-related drugs.
5.Lateral vocal fold injection of autogenous fat for vocal fold insufficiency
Wen XU ; Demin HAN ; Lizhen HOU ; Li ZHANG
Chinese Archives of Otolaryngology-Head and Neck Surgery 2006;0(07):-
OBJECTIVE To study the efficacyof the lateral vocal fold injection of autogenous fat for vocal fold insufficiency. METHODS Twenty nine patients with vocal fold insufficiency were treated in our department with fat injection. Deep lateral vocal fold injection was performed through direct laryngoscope under general anesthesia. Fat was injected into the lateral aspect of the vocal fold (paraglottic space) using a special high pressure Brunning injector. The perceptual acoustic,phonatory function,and video laryngostroboscopy were evaluated before and after operation. RESULTS All the patients were followed up for 10 to 18 months. There were 24 patients with excellent results,2 patients with improvement, and 3 patients with no improvement. Phonatory function showed significant improvement(P
6.Fatal asthma attack induced by amiodarone in the elderly:two cases report and literature reviews
Li WEN ; Xing HAN ; Jinhua QUAN ; Yanqi CHEN
Chinese Journal of Geriatrics 2016;35(12):1317-1319
Objective To investigate the mechanisms and clinical characteristics of fatal asthma attack induced by amiodarone in the elderly,and to discuss its serious potent risks.Methods We reported two cases of fatal asthma attack in the elderly with fast atrial fibrillation induced by amiodarone,and discussed the clinical manifestation and emergency treatment,with literatures review.Results The two patients presented with respiratory arrest.After targeted therapies,including artificial ventilation and hormone injection,the patients were capable of spontaneously breathing,while still in severe asthma attack.And further anti-asthma treatment led to a complete remission.Conclusions Amiodarone may cause extremely severe asthma attack in elder patients with tachyarrhythmia complicated with bronchial hyper-responsiveness diseases such as asthma or chronic obstructive pulmonary diseases.Clinicians should pay great attention to this situation and be prepared to cope with serious adverse reactions.
7.Metastasis correlation factors expression and NF-?B activation in colorectal carcinoma
Kun YU ; Mei HAN ; Jinkun WEN ; Binghui LI
Basic & Clinical Medicine 2006;0(04):-
Objective To investigate the relationship between NF-?B activation and the expression of metastasis correlation factors.Methods The expression of NF-?B,COX-2,ICAM-1,VCAM-1 and MMP9 in colorectal cancer and normal tissues was detected using Western blotting.Results(1)The expression level of NF-?B was higher in cancer tissues than that in normal tissues(P
9.Preventive and Therapeutic Effects of Xianling Gubao Capsules for Postmenopausal Osteoporosis
Wen WU ; Dongfeng LI ; Ximei ZHI ; Meiqing HAN
Journal of Guangzhou University of Traditional Chinese Medicine 2001;0(03):-
0.05); while in the 12th month, BMD markedly increased in group A and decreased in group B (P 0.05) but ?-CTX level increased after treatment (P
10.Biocompatibility of human umbilical cord mesenchymal stem cells and acellular muscle bioscaffolds
Tao ZHANG ; Yimin WEN ; Han LI ; Xiangke WEI
Chinese Journal of Tissue Engineering Research 2013;(25):4616-4622
10.3969/j.issn.2095-4344.2013.25.008